If we are going with the " we are happy as we are" scenario, then Jack could possibly be off. Promises were made to him by NSWE, presumably about the level of incoming players. Cannot see Buendia and Young being the end of our business this summer.
He's a confidence player, and it has deserted him. Plus Smith has given him enough chances to shine, and he hasn't stepped up to the plate.
Best imo that he leaves to find a bit of form elsewhere.